Attachment for wood-barking machines.



A. R. WILKINSON. ATTACHMENT FOR WOOD BARKING MACHINES.

APPLICATION FILED FEB. I0, I9I4.

Patented Oct. 17,1916.

4 SHEETS-SHEET l WW1/leones A. R. WILKINSON.

ATTACHMENT FOR WOOD BARKING MACHINES. APPLICATION FILED FEB. I0. Ism.

1,201,410. Patented out. 17,1916.

Y 4 SHEETS-SHEET 2.

g2 IW A. R. WILKINSON.y

ATTACHMENT FOR WOOD BARKING MACHINES.

APPLlcAloN FILED rEa.1o. 1914.

1,201,410. Patented oct. 17,1916.

4 SHEETS-SHEET 3.

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A. R. WILKINSON.

ATTACHMENT Tori` woon BARKING MACHINES.

APPLICATION FILED FEB. I0. 1914. I.

' Patented Oct. 17; 1916.

ATTACHMENT FOR WOODBARKING--MACHINES.

Application filed February 10, 1914. Serial No. 817,823.

To all whom t may concern.'

Be it known that I, ALBERT R. WILKIN- sON, a citizen of the United States, residing at Ashburnham, in the county of Worcester State of Massachusetts, have invented certain new and useful Improvements in Attachments for Vood Barking Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the same. This invention relates to attachments for wood barking'machines and particularly to that type of wood barking machine employing a rotary disk carrying a plurality of radially disposed knives or cutting elements.

The object of the invention resides in the provision of a cheap, simple and effective attachment for feeding logs of wood to the rotary knife element of a wood barking machine which can be handled with greater care than devices of this character now in use, and which will obviate a great waste of wood incident to the use of ordinary attachnients.

A further object of the invention resides 2in the provision of a device of the character named which will materially increase the output of the barker with whichv it is associated over the normal output of such barker when used in conjunction with ordinary devices for feeding material to the rotary knife element thereof.

A still further object of the invention resides in the provision of a work feeding attachment for barking machines wherein the feeding of the work is effected by the manipulation of a hand lever, the operation of said lever to feed the work to the barkerv serving to render idle the log conveyer, while the movement of such lever in releasing the log will automatically set in operation the log conveyer to bring another log into proper position to be fed to the barker.

Still anotherrobject of the invention resides in the provision of an attachment of Speccaton of Letters Patent.

Patented Oct. 1"?, 1916.

struction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims.

. In describing the invention in detailreference will be had to the accompanying drawings wherein like `characters oflreference denote corresponding parts in the several views, and in which- Figure 1 is a front elevationV of a barking machine having the improvedl attachment associated therewith; Fig. 2, a side elevation of what is shown in Fig. 1; Fig. 3, a plan view of what is shown in Fig. 1; Fig. 4, a section on the line 4 1 of Fig. 1 showing the attachment operated to feed a log to the rotary cutter of the barker; Fig. 5, a partial front elevation showing the position of the belt tightener which controls the log conveyer when the parts of the operating leverr are in the position shown in Fig. 4; Fig. 6, a partial side elevation viewed oppositely to Fig. 2; Fig. 7 a perspective view partly in section of the operating lever, and Fig. 8, a detail perspective view illustrating the belt tightener which is connected to the operating lever and through the instrumentality of which the operation of the log conveyer extending across the front of the barker casing is controlled.

Referring to the drawings 10 indicates the casing of the barker inwhich is rotatably mounted upon a shaft 11 a rotary disk 12 carrying radial knives 13. The shaft 11 is mounted in suitable bearings 14 and V15 disposed at the front and rear of the casing 10 respectively. Fixed upon theshaft 11 at the rear of the casing 10 is a belt pulley 16 for a purpose' that will presently appear. The shaft 11 isadapted to be rotated by connection with any suitable source of power, such-rotation of the shaft 11 serving to rotate the/disk 12 and knives 13las will bc obvious. The front of the casing V10 is provided with the usual opening v17 whereby the logs to be Voperated upon may be moved into position to be engaged by the Vknives 13 during the rotation of the disk 12 as will hereinafter appear. Rotatably mounted in suitable bearings 18 atl one side of the casing 10 is a shaft 19 having its longitudinal axis running parallel to the v longitudinal axis of the shaft 11. Rotatably mounted in thel shaft 19. Fixed upon the shaft 19 are sprocket wheels 22 and 23, while sprocket wheels 24 and 25 are fixed upon the shaft 21. rfraveling on the sprocket wheels 22 and 24 is a sprocket chain 26, while a similar sprocket chain 27 travels on the sprocket wheels and 25. These sprocket chains 26 and 27 constitute the conveyer for moving the logs into proper position to be fed to the knives 13.

Secured to the front of the casing 10 just beneath the opening 17 is a bracket 28 provided on its upper side with longitudinal grooves 29 and 30 disposed respectively beneath the upper portions of the sprocket chains 26 and 27. The rear of the bracket 28 terminates in an inclined portion 31 up which the logs are adapted to be moved in the. operationof feeding same to the knives 13. Journaled in suitable bearings 32 at the rear of the bracket 28 is a shaft 33 which is disposed slightly above the lower end of the opening 17 and has fixed thereon four toothed wheels 34 arranged symmetrically with respect to the vertical center of the casing 10. The bracket 28 is provided adjacent one end with an upstanding arm 35 upon the upper end of which is rotatably mounted a top roller 36 having its axis of rotation parallelto the axis of rotation of the disk 12. Fixed on the end of the shaft 33 remote from the arm 35 is a sprocket wheel 37 for a purpose that will presently appear. Fixed on the shaft 21 at the rear of the casing 10 is a belt wheel 38 and loosely mounted on said shaft 21 at the rear of the belt wheel 38 is a hub 39. Radiating from this hub 39 is an arm 40 having adjustably mounted thereon a counterbalancing weight 41. Also radiating from the hub 39 is an arm 42 which rotatably supports at its free end a belt tightening wheel 43 disposed in the plane of the belt wheel 38.

Mounted on the top of the casing 10. is a bracket frame 44 which carries a bearing 45 at one end thereof. Botatably mounted in this bearing 45 is a. shaft 46 running parallel to the shaft 11. Fixed upon the rear end of the shaft 46 is a belt wheel 47 which alines with the belt wheel 16. Traveling on the belt wheels 47 and 16 is a belt 48. Also fixed upon the shaft 46 at the rear of the belt wheel 47 is a belt wheel 48 which alines with the belt wheel 38. Traveling on the belt wheels 48 and 38 is a belt 49 which is adapted to be tightened byV means of the wheel 43, said wheel being normally held out of engagement with the belt 49 by means of the counterbalancing weight 41 as will be obvious. It will be noted that the belt 49 is relatively loose so that when the wheel 43 is out of engagement therewith the rotation of the belt wheel 48 will be ineffective to rotate the belt wheel 38 and shaft 21. Rotatably mounted in bearings 50 carried by the frame 44 is a shaft 51 running parallel to the shaft 33. Fixed on one end of the shaft 51 is a beveled gear 52 which meshes with a beveled gearV 53 fixed on the forward end of theshaft 46. Fixed on the end of the shaft 51 remote from the beveled gear52 is a sprocket wheel 54 and traveling on the sprocket wheels 54 and 37 is a sprocket chain 55 which is guided in its travel by rollers 56 rotatably supported by an arm 57 depending from the frame 44.

Pivotally mounted upon the shaft 51 is a frame A which embodies arms 58 and 59 connected together by spaced bearings 60 and 61. Botatably mounted in the bearings 60 and 61 is a shaft62 which has fixed on the inner end thereof a beveled gear 63 meshing with a beveled gear 64 fixed on the shaft 51 between the ends of the arms 58 and 59. Journaled in the free ends of the arms 58 and 59 is a shaft 65 which has fixed thereon a beveled gear 66-in mesh with a beveled gear 67 fixed on the outer end of the shaft 62. Fixed on the shaft adjacent the outer side of the arm 58 is a toothed disk 68, r

while a corresponding toothed disk 69 is fixed on the shaft 65 adjacent the outer side of the arm 59. The arm 58 of the frame A is extended rearwardly as l at 70 and has mounted thereon a counterbalancing weight 71 which serves to normally hold the frame A in the position shown in Fig. 2. Carried by the arms 58 and 59 respectively adjacent their free ends are brackets 72 to which is secured an operating lever B formed of inner and outer sections 73 and 74 connected together by a hinge 75 and normally held in longitudinal alinement by a spring device 76. Botatably mounted in brackets 77 carried by the section 74 is a longitudinal shaft 78 the outer end of which terminates in a hand grip 79 while the inner end thereof is provided with a lateral extension 80. The free end of the extension 8O has secured thereto one end of a cable 81 which is trained 1 over pulleys 82 and has its other end secured to a radial finger 83 on the hub 39.

From the foregoing description it will be obvious that upon rotation of the disk 12 the shafts 46, 51 and 33 will also be rotated. When the frame A is in the position shown in Fig. 2 the cable 81 shall have been operated to rotate the hub 39 and engage the wheel 43 with the belt 49 and thereby edect the operation of the log. conveyer formed by the chains 26 and 27. `As soon as a log traveling with the chains 26 and 27 has been moved to a position in front of the toothed wheels 34 the outer end of the lever B is pulled down by the operator stationed upon a raised platform C. This action of the operator will break the lever B and compress the spring device 76 until the resistance offered bythe spring device is greater than the weight 71. The initial movement of the section 74 of the lever B will slack the cable 81 and thus release the wheel 43 to the influence of the weight 41 when the hub 39 will be rotated to move the wheel 43 out of 'engagement with the belt 49 and thus stop the rotation of the shaft 21 and the movement of the chains 26 and 27. Further downward movement of the lever B willswing the frame A against the influence of the weight 71 and engage the log between the toothed disks 68 and 69 and the toothed Wheels 34. The rotation of these disks and wheels will Vserve to feed the log to the knives 13 and effect the rotation of the log during the time it is held in position to be operated upon by the knives 13. When the bark has been completely removed from the log the lever B is released and returned to its normal position with the frame A under the influence of the weight 71. This last named movement of the lever B will through the medium of the cable 81 rotate the hub 39 to engage the wheel 43 with the belt 49 and again operate the chains 26 and 27 to move another log in position to be fed to knives 13. In the event very small logs are being operated upon it will be unnecessary to allow the lever B and the frame A to return to their normal positions as the barking of each log is completed. Under such conditions only sufficient movement is allowed to the frame A under the influence of the weight 71 as will release the barked log. As this movement would not be sufficient to bring the wheel 43 into engagement with the belt 49 the operator partially rotates the shaft 7 8 and owing to the connection of this shaft with the cable 81 ample rotation would be imparted to the hub 39 to effect the engagement of the wheel 43 with the belt 49. By thus enabling the operator to institute the actuation of the log conveyer without returning` the frame A and lever B to their normal position it will be obvious the log, said lever having a hinged outerV y end adapted topartake of a limited movement prior to the initial movement of the swinging element in the operation of moving the latter into pressing relation to the log, a conveyer for moving the log into position to be engaged by the swinging element, and means operated by said prior movement of the outer end of the lever to throw said conveyer out of operation. Y l v 2. In a barking machine, the combination with a rotary cutter, of a swinging element for pressing the log against the cutter, means normally holding the swinging element out of pressing relation to the log, a conveyer for moving the logs into position to be engaged by the swinging element, means operated by the movement of said swinging element into engagement with lthe log to throw said conveyer out of operation and by the movement of said element to normal position to throw the conveyer into operation, and means for throwing said conveyer into operation independent of the full return movement of the swinging element to normal position.

In testimony whereof, I aliiX my signature, in the presence of twowitnesses.

ALBERT R. WILKINSON.

Witnesses: j

MARION A. MossMAN, W. B. WHITNEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

